Spine reinforced with 2" non-yellowing library tape (may not show in scan.) Very tight and square - probably unread.

Serialized as "Omega!" in Amazing August & September 1960.
For the crime of murder, Will Barrent's memory of it was erased and he was exiled from Earth to the prison planet Omega. On Omega, society was inverted and Evil was worshipped: a world where strife was the rule, addictive hallucinations encouraged, blood-sport games had human prey, and a killer could climb the ladder of success - one corpse at a time. And when Barrent found a way off the planet with no escape, he was unprepared for Earth after his eyes had opened and his perspective had changed on Omega.